{
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  "LayerId" : 254,
  "LayerName" : "Wellbore - History",
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    "OBJECTID" : 303,
    "wlbNpdidWellbore" : 308,
    "wlbName" : "15/2-1",
    "wlbHistory" : "\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cb\u003e\u003cspan lang=EN-GB\u003eGeneral\u003c/span\u003e\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eWell 15/2-1 was drilled in the Vilje\r\nsub-basin in the Viking Graben in the North Sea, ca 1.5 km from the UK border.\u003c/span\u003e\u003cspan lang=EN-GB\u003eThe objective of the well 15/2-1 was to\r\ntest the Upper Jurassic, Middle Jurassic, and Triassic sandstone reservoirs\r\nnorthwest of and down dip of the salt diapir encountered in the well 15/5-3. The\r\nwell was planned to be drilled ca 200 m into the Triassic with a total depth of\r\nca 4525 m.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cb\u003e\u003cspan lang=EN-GB\u003eOperations and results\u003c/span\u003e\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eWildcat well 15/2-1 was spudded with the\r\nsemi-submersible installation Nortrym on 26 September 1981 and drilled to TD at\r\n4600 m in the Late Permian Zechstein Group. No significant problems were\r\nencountered in the operations. The well was drilled with seawater and hi-vis\r\npills down to 665 m and with Shaletrol polymer mud system from 665 m to 2750 m.\r\nAt 2750 m the mud was converted to a dispersed mud system by adding\r\nlignosulphonate and this was used for the remaining well bore down to TD. There\r\nwas 0 - 3% oil in the mud below 1168 m.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eThe well penetrated a number of sandstone\r\nFormations in the Tertiary (Skade, Grid, Intra Balder sandstone, Heimdal, and\r\nTy Formations). All these were entirely water wet. The Hugin Formation (4356 - 4493\r\nm) consisted of massive very fine grained sandstones with beds of coal on top. The\r\nSleipner Formation (4493 - 4554.5 m) had a 10 m thick coal layer on top\r\nunderlain by siltstones grading occasionally to very fine sandstones, interbeds\r\nof sandstones, and stringers of coal. The well did not penetrate any Early\r\nJurassic or Triassic rocks, but encountered evaporites of Permian age at 4554.5\r\nm, unconformably underlying the Sleipner Formation.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eGood hydrocarbon shows were reported from\r\nboth the Hugin and Sleipne",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
  }
}